He even replaced all the carpet himself and it had zero effect.

@Negar P.Is all you’re doing replacing a single window?

Rip and replace: All wiring, all plumbing, kitchen, bath and build a new deck.I had plans to add a garage but family matters made me have to sell and move closer to home.Great experience!

@Nam Hoangare you just replacing something or is this new?

If it isn't working out,  and Jim and John can find a new roommate to replace Joe,  i will void the original lease and make a new one.  

Need to replace floors - what material and how many square feet are we talking - Then round up.Paint - what type of paint is tenant proof and how much?

@Ahmed Elias the structural component would be the only major concern.

I replace the lock every time a tenant moves but I always save the locks to use later.

Improving a credit score is another key component and you're tackling that as well. 

I'm not sure for City of Atlanta specifically, but those are usually covered under "no plan permits" or "replacement in kind" permits.